Answer

The third stanza takes us to a ‘brash’ restaurant, full of ‘up market, haute cuisine’ with a ‘guard at the gatepost’. It is most identifiable as a ‘whites only inn’ so no black people are allowed in here. It is not meant to be seen positively by the reader as the poet calls it ‘brash’, it is personified as something almost hiding or lurking in the grass and weeds ‘it squats’. The fact that there has to be a guard at the gatepost shows that something is wrong here, that those inside need protection from a guard.